The suffix -fy turns other words into verbs that mean “to make” or “to become.” When you add -fy to the end of a word, you create an action that transforms something into whatever that root word describes.

If you simplify an explanation, you make it simple. When you clarify your thinking, you make it clear. To beautify a room means to make it beautiful. The pattern works consistently: the root word tells you what kind of change happens, and -fy signals that someone or something is making that change occur.

This suffix appears constantly in English. You might intensify your studying before a big test, making your efforts more intense. A scary movie might terrify younger viewers by making them feel terror. Scientists classify animals by organizing them into clear categories.

Sometimes -fy creates playful or informal words. You might fancify your presentation by adding decorations, even though fancify isn't in most dictionaries. Writers and speakers invent new -fy words all the time because the pattern makes instant sense: if you can countrify music or cityfy your cousin who moves to New York, people understand exactly what you mean.